Game system, computer-readable non-transitory storage medium, game processing method and game apparatus

ABSTRACT

In a game system including a single or a plurality of game apparatuses, a first game execution unit executes a first game in accordance with an instruction of a player inputted via an input unit. A second game execution unit executes a second game in accordance with an instruction of the player inputted via the input unit. The second game execution unit sets a new game mode of a first degree of difficulty so as to be accessible in the second game in response to an execution result of the first game having satisfied a predetermined condition.

CROSS REFERENCE TO RELATED APPLICATION

The disclosures of Japanese Patent Application No. 2012-095897 and Japanese Patent Application No. 2012-095900, filed on Apr. 19, 2012, are incorporated herein by reference.

FIELD

The technology shown here relates to a game system, a computer-readable non-transitory storage medium, a game processing method and a game apparatus.

BACKGROUND AND SUMMARY

Conventionally, a technology for incorporating a play result of one game into another game is known.

An objective of the present technology is to provide a game system, a computer-readable non-transitory storage medium, a game processing method and a game apparatus which are novel. More particularly, the objective of the present technology is to provide, for example, a game system, a computer-readable non-transitory storage medium, a game processing method and a game apparatus which can provide a game that will not make a player easily get bored.

The above objective can be attained by, for example, exemplary configurations below.

A first exemplary configuration is a game system including a single or a plurality of game apparatuses. The game system comprises: at least one input unit; a first game execution unit which executes a first game in accordance with an instruction of a user inputted via the input unit; and a second game execution unit which executes a second game in accordance with an instruction of the user inputted via the input unit. The second game execution unit includes a second setting unit which sets a new game mode of a first degree of difficulty so as to be accessible in the second game in response to an execution result of the first game having satisfied a predetermined condition.

The first game execution unit may include: a first determination unit which determines whether the execution result of the first game satisfies the predetermined condition; a first data output enabling unit which enables output of predetermined first data indicating that the execution result of the first game satisfies the predetermined condition in response to the execution result of the first game having satisfied the predetermined condition; and a first data output unit which outputs the first data, and the second game execution unit may include a first data input unit which receives the first data. The second setting unit may set the game mode of the first degree of difficulty which is accessible in the first game so as to be inaccessible in the second game when the first data is yet to be received, and set the game mode of the first degree of difficulty so as to be accessible in the second game in response to the first data having been received.

The first data output unit may transmit a signal representing the first data via wireless communication, thereby outputting the first data, and the first data input unit may receive the signal via wireless communication, thereby receiving the first data.

The game mode of the first degree of difficulty may be a game mode of a lower degree of difficulty than a game mode which is accessible in the second game when the execution result of the first game does not satisfy the predetermined condition.

The game mode of the first degree of difficulty may be a game mode of a higher degree of difficulty than a game mode which is accessible in the second game when the execution result of the first game does not satisfy the predetermined condition.

The predetermined condition may be to clear the first game.

The first game execution unit may include a first display control unit which causes a display device to display a setting change screen for urging the user to select whether or not to use the game mode of the first degree of difficulty. The first display control unit may cause the display device to display the setting change screen in a different display mode in accordance with whether the game mode of the first degree of difficulty is set so as to be accessible by the second setting unit.

The first game execution unit may further include a first setting unit which sets a new game mode of a second degree of difficulty so as to be accessible in the first game in response to an execution result of the second game having satisfied a second predetermined condition.

The game system may comprise: a first game apparatus which includes the input unit and the first game execution unit; and a second game apparatus which includes the input unit and the second game execution unit.

The game system may comprise: a first storage medium having stored therein a first game program for causing the game apparatus to function as the first game execution unit; and a second storage medium having stored therein a second game program for causing the game apparatus to function as the second game execution unit. The game apparatus may be able to selectively access to one of the first storage medium and the second storage medium.

The first game and the second game may be different versions of a same game title.

A second exemplary configuration is a computer-readable non-transitory storage medium having stored therein a game program to be executed in a game system including a single or a plurality of game apparatuses and comprising at least one input unit. The game program causes a computer of the game apparatus to execute: a first game execution process of executing a first game in accordance with an instruction of a user inputted via the input unit; and a second game execution process of executing a second game in accordance with an instruction of the user inputted via the input unit. The second game execution process includes a second setting process of setting a new game mode of a first degree of difficulty so as to be accessible in the second game in response to an execution result of the first game having satisfied a predetermined condition.

The game program may be stored in any computer-readable storage medium (e.g., a flexible disk, a hard disk, an optical disk, a magneto-optical disc, a CD-ROM, a CD-R, a magnetic tape, a semiconductor memory card, a ROM, a RAM, and the like).

A third exemplary configuration is a game processing method performed in a game system including a single or a plurality of game apparatuses and comprising at least one input unit. The game processing method comprises: executing a first game process in accordance with an instruction of a user inputted via the input unit; and executing a second game process in accordance with an instruction of the user inputted via the input unit. The second game process includes a second setting process of setting a new game mode of a first degree of difficulty so as to be accessible in the second game process in response to an execution result of the first game having satisfied a predetermined condition.

A fourth exemplary configuration is a game apparatus comprising: an input unit; a first game execution unit which executes a first game in accordance with an instruction of a player inputted via the input unit; and a second game execution unit which executes a second game in accordance with an instruction of the player inputted via the input unit. The second game execution unit includes a second setting unit which sets a new game mode of a first degree of difficulty so as to be accessible in the second game in response to an execution result of the first game having satisfied a predetermined condition.

According to the present technology, by satisfying a predetermined condition in a first game, a new game mode of a first degree of difficulty becomes accessible in a second game.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram illustrating a non-limiting example of a configuration of a hand-held game apparatus 10;

FIG. 2 is a block diagram illustrating a non-limiting example of a configuration of a game system;

FIG. 3 is a diagram illustrating a non-limiting example of an image displayed on a hand-held game apparatus 10 a;

FIG. 4 is a diagram illustrating a non-limiting example of an image displayed on the hand-held game apparatus 10 a;

FIG. 5 is a diagram illustrating a non-limiting example of an image displayed on the hand-held game apparatus 10 a;

FIG. 6 is a diagram illustrating a non-limiting example of an image displayed on the hand-held game apparatus 10 a;

FIG. 7 is a diagram illustrating a non-limiting example of obtaining conditions of respective keys in a game of a version A;

FIG. 8 is a diagram illustrating a non-limiting example of obtaining conditions of respective keys in a game of a version B;

FIG. 9 is a diagram illustrating a non-limiting example of an image displayed on the hand-held game apparatus 10 a;

FIG. 10 is a diagram illustrating a non-limiting example of a program and information stored in a main memory 15 a of the hand-held game apparatus 10 a;

FIG. 11 is a diagram illustrating a non-limiting example of possessed key information;

FIG. 12 is a diagram illustrating a non-limiting example of selectable option information; and

FIG. 13 is a flow chart illustrating a non-limiting example of processing executed by a processor 13.

DETAILED DESCRIPTION OF NON-LIMITING EXAMPLE EMBODIMENTS

Hereinafter, an exemplary embodiment of the present technology will be described.

In FIG. 1, a hand-held game apparatus 10 includes an input device 11, a display device 12, a processor 13, an internal storage unit 14, a main memory 15, and an infrared communication device 16.

The input device 11 is operated by a user and outputs a signal based on an operation by the user. The input device 11 is, for example, a cross switch, a push button, or a touch panel.

The display device 12 displays an image generated by the hand-held game apparatus 10 on a screen. Typically, the display device 12 is a liquid crystal display.

The internal storage unit 14 stores a computer program executed by the processor 13. Typically, the internal storage unit 14 is a flash EEPROM.

The main memory 15 temporarily stores the computer program and information.

The infrared communication device 16 is used for conducting infrared communication with another hand-held game apparatus. The infrared communication device 16 transmits/receives an infrared signal to/from the other hand-held game apparatus.

The processor 13 executes predetermined processing in accordance with the computer program stored in the internal storage unit 14 or an external storage unit 17.

In the exemplary embodiment, a game system including two hand-held game apparatuses 10 a, 10 b as shown in FIG. 2 will be described. In the following description, components of the hand-held game apparatus 10 a are denoted respectively by the reference numerals shown in FIG. 1 each with a suffix letter “a” while components of the hand-held game apparatus 10 b are denoted respectively by the reference numerals shown in FIG. 1 each with a suffix letter “b,” as appropriate, thereby discriminating between the components of the hand-held game apparatus 10 a and the components of the hand-held game apparatus 10 b.

Each of the hand-held game apparatus 10 a and the hand-held game apparatus 10 b has a configuration similar to that of the hand-held game apparatus 10 shown in FIG. 1. An external storage unit 17 a is attached to the hand-held game apparatus 10 a while an external storage unit 17 b is attached to the hand-held game apparatus 10 b. The hand-held game apparatus 10 a and the hand-held game apparatus 10 b conduct infrared communication using the infrared communication device 16, thereby transmitting/receiving “keys” described below.

In the external storage unit 17 a, a game program of a version A of one game title is stored. Meanwhile, in the external storage unit 17 b, a game program of a version B of the game title is stored. The version A and the version B are basically the same in story line but different from each other in some points. For example, both of the version A and the version B are role-playing games set in basically the same game world. However, in the version A, a town called “A town” is located at a predetermined position in the game world while, in the version B, a town called “B town” is located at the predetermined position in the game world instead of the “A town.” The “A town” and the “B town” not only have different names from each other but also have located therein different non-player characters, faculties, and the like.

Next, an outline of an operation of the hand-held game apparatus 10 will be described.

The hand-held game apparatus 10 executes a predetermined game (e.g., the role-playing game described above) based on the game program stored in the external storage unit 17. The user can call up a “key-related menu” screen at any timing during a game play. The “key-related menu” screen can be called up in both of the game program of the version A and the game program of the version B. In the following description, a case of the hand-held game apparatus 10 a will be described.

FIG. 3 shows an example of the “key-related menu” screen displayed on a display device 12 a based on an instruction of the user (hereinafter, referred to as user A for the sake of convenience) of the hand-held game apparatus 10 a. On the “key-related menu” screen, three options 20 a to 20 c and a cursor 21 are displayed.

When the user A selects the options 20 a of “change setting” in FIG. 3, a “change setting” screen shown in FIG. 4 is displayed. On the “change setting” screen, three options 20 d to 20 f and the cursor 21 are displayed.

When the user A selects the option 20 d of “change degree of difficulty” in FIG. 4, a “change degree of difficulty” screen shown in FIG. 5 is displayed. On the “change degree of difficulty” screen, four options 20 g to 20 j and the cursor 21 are displayed. Further, on the “change degree of difficulty” screen, a mark 22 indicating an option currently being selected and marks 23 a and 23 b each indicating an unselectable option are also displayed. In FIG. 5, the marks 23 a and 23 b each indicating an unselectable mode are displayed on the option 20 g of “difficult mode” and the option 20 i of “easy mode,” respectively. Accordingly, these modes cannot be selected at this time point. In order for these modes to become selectable, a “difficult mode key” and an “easy mode key” described below need to be obtained, respectively.

It should be noted that immediately after start of the game of the version A (that is, immediately after start from the beginning but not from the middle of the game having been resumed), a “normal mode” is being selected and the “difficult mode” and the “easy mode” are still unselectable) as shown in FIG. 5. Similarly, also immediately after start of the game of the version B, the “normal mode” is being selected and the difficult mode” and the easy mode” are still unselectable.

When the “difficult mode” is selected, a level of a particular enemy character in the game world is higher than in the “normal mode,” which makes the enemy character less easy to defeat. When the “easy mode” is selected, the level of the particular enemy character is lower than in the “normal mode,” which makes the enemy character easier to defeat. An experience point (value which affects growth of a player character) obtained when the particular enemy character is defeated in the “difficult mode” is greater than that in the “normal mode.” Meanwhile, an experience point obtained when the particular enemy character is defeated in the “easy mode” is the same as that in the “normal mode.”

When the user A selects the option 20 e of “switch towns” in FIG. 4, a “switch towns” screen shown in FIG. 6 is displayed. On the “switch towns” screen, three options 20 k to 20 m and the cursor 21 are displayed. Further, on the “switch towns” screen, the mark 22 indicating an option currently being selected and a mark 23 c indicating an unselectable option are also displayed. In FIG. 6, the mark 23 c indicating an unselectable mode is displayed on the option 201 of “B town.” Accordingly, the “B town” cannot be selected at this time point. In order for the “B town” to become selectable, a “B town key” described below needs to be obtained.

It should be noted that the “A town” is being selected and the “B town” is still unselectable as shown in FIG. 6 immediately after the start of the game of version A. Meanwhile, the “B town” is being selected and the “A town” is still unselectable immediately after the start of the game of the version B.

Next, methods of obtaining respective various keys such as the above-described “difficult mode key” and the like will be described with reference to FIG. 7 and FIG. 8.

In the exemplary embodiment, four keys which are the “easy mode key,” the “difficult mode key,” an “A town key,” and the “B town key” are provided. However, in the game of the version A, only the “easy mode key” and the “A town key” can be obtained while only the difficult mode key” and the “B town key” can be obtained in the game of the version B.

For example, in the game of the version A, the “easy mode key” can be obtained when a condition A1 (for example, the game is cleared (that is, a main objective of the game is attained)) is satisfied while the “A town key” can be obtained when a condition A2 (for example, a particular enemy character is defeated) is satisfied as shown in FIG. 7. However, the other keys (the “difficult mode key” and the “B town key”) cannot be obtained by just playing the game of the version A.

Meanwhile, in the game of the version B, the “difficult mode key” can be obtained when a condition B1 (for example the game is cleared (that is, a main objective of the game is attained) is satisfied while the “B town key” can be obtained when a condition B2 (for example, a particular enemy character is defeated) is satisfied as shown in FIG. 8. However, the other keys (the “easy mode key” and the “A town key”) cannot be obtained by just playing the game of the version B.

A player A of the hand-held game apparatus 10 a can obtain the “easy mode key” by satisfying the above described condition A1 in the game of the version A. Once the “easy mode key” is obtained, in the game of the version A, the mark 23 b (FIG. 5) displayed on the “change degree of difficulty” screen is deleted and the option 20 i of “easy mode” can be selected as shown in FIG. 9.

Similarly, the player A of the hand-held game apparatus 10 a can obtain the “A town key” by satisfying the above described condition A2 in the game of the version A. It should be noted that, in the game of the version A, the option 20 k of “A town” is selectable from the start as shown in FIG. 6. Accordingly, no particular change is made on a content of the “switch towns” screen even if the “A town key” is obtained.

In order to make an option which is unselectable in an initial state selectable, in addition to the method of satisfying a predetermined condition in the game and thereby obtaining a corresponding key as described above, there is provided a method of receiving a corresponding key from another hand-held game apparatus 10. Hereinafter, the method will be described in detail.

When the user A selects the option 20 b of “transmit/receive key” in FIG. 3, the hand-held game apparatus 10 a transmits/receives a key to/from another hand-held game apparatus via an infrared communication device 16 a. For example, in FIG. 2, a key possessed in the hand-held game apparatus 10 a is transmitted to the hand-held game apparatus 10 b by an infrared signal and simultaneously a key possessed in the hand-held game apparatus 10 b is transmitted to the hand-held game apparatus 10 a by an infrared signal.

For example, when the “difficult mode key” is possessed in the hand-held game apparatus 10 b, the hand-held game apparatus 10 a receives the “difficult mode key” from the hand-held game apparatus 10 b. In the hand-held game apparatus 10 a, once the “difficult mode key” is received, the mark 23 a (FIG. 5) is deleted and thereafter the option 20 g of “difficult mode” can be selected.

Similarly, when the “B town key” is possessed in the hand-held game apparatus 10 b, the hand-held game apparatus 10 a receives the “B town key” from the hand-held game apparatus 10 b. In the hand-held game apparatus 10 a, once the “B town key” is received, the mark 23 c (FIG. 6) is deleted and thereafter the option 201 of “B town mode” can be selected.

Next, an operation of the hand-held game apparatus 10 a will be described in detail with reference to FIG. 10 to FIG. 13.

FIG. 10 shows an example of a program and information stored in a main memory 15 a of the hand-held game apparatus 10 a.

A game program D1 is a computer program for causing a processor 13 a to execute the game of the version A. The game program D1 is read from the external storage unit 17 a and loaded into the main memory 15 a.

Game data D2 is data necessary for executing the game and includes data of towns (town data of the A town, town data of the B town, and the like) located in the game world.

Possessed key information D3 is information indicating which key is possessed. FIG. 11 shows a specific example of the possessed key information D3. In FIG. 11, a possession flag is set to “0” with respect to a key which is not possessed while a possession flag is set to “1” with respect to a key which is possessed.

Selectable option information D4 is information indicating which option is selectable. FIG. 12 shows a specific example of the selectable option information D4. In FIG. 12, a selectable/unselectable flag is set to “0” with respect to an unselectable option while a selectable/unselectable flag is set to “1” with respect to a selectable option.

Next, a flow of processing executed by the processor 13 a of the hand-held game apparatus 10 a based on the game program D1 will be described with reference to a flow chart of FIG. 13.

Upon start of execution of the game program D1, the processor 13 a firstly performs an initialization process in step S10 of FIG. 13. In the initialization process, for example, a process of setting respective possession flags of all of the keys to “0” as shown in FIG. 11 and a process of setting respective selectable/unselectable flags of the “easy mode,” the “difficult mode,” and the “B town” to “0” and setting a selectable/unselectable flag of the “A town” to “1” as shown in FIG. 12, and the like are performed. It should be noted that when the game having been suspended in the middle of the game is resumed, these flags are set in accordance with a content of save data saved when the game was suspended.

In step S11, the processor 13 a performs a game process. The game process includes, for example, a process of controlling the player character in accordance with a signal from the input device 11, a process of controlling a non-player character based on a predetermined algorithm, a process of causing a predetermined event in the game world, a process of generating a game image and outputting the game image to the display device 12, and the like.

In step S12, the processor 13 a determines whether a result of the game process satisfies a predetermined condition (the condition A1 or the condition A2). Then, when the predetermined condition is satisfied, the processor 13 a proceeds the processing to step S13. Otherwise, the processor 13 a proceeds the processing to S15.

In step S13, the processor 13 a updates the possessed key information D3. Specifically, the processor 13 a changes a possession flag of a key corresponding to the satisfied condition to “1.” For example, the processor 13 a changes the possession flag of the “easy mode key” to “1” when the condition A1 is satisfied and changes the possession flag of the “A town key” to “1” when the condition A2 is satisfied.

In step S14, the processor 13 a updates the selectable option information D4. Specifically, the processor 13 a changes a selectable/unselectable flag of an option corresponding to a newly obtained key to “1.” For example, when the “easy mode key” is obtained, the processor 13 a changes the selectable/unselectable flag of the “easy mode” to “1.” It should be noted that because the selectable/unselectable flag of the “A town” is initially set to “1,” the selectable/unselectable flag of the “A town” remains “1” when the “A town key” is obtained.

In step S15, the processor 13 a determines whether a screen for changing settings (specifically, the “change degree of difficulty” screen (FIG. 5) or the “switch towns” screen (FIG. 6)) has been called up by the user. Then, when the screen for changing the settings has been called up, the processor 13 a proceeds the processing to step S16. Otherwise, the processor 13 a proceeds the processing to S18.

In step S16, the processor 13 a displays the screen for changing the settings (FIG. 5, FIG. 6) based on the selectable option information D4. Specifically, with respect to options whose selectable/unselectable flags are set to “0” in the selectable option information D4, the processor 13 a displays the marks (23 a to 23 c) each indicating that the option is unselectable, respectively.

In step S17, the processor 13 a changes the settings of the game in accordance with an option selected by the user. For example, when the “easy mode” is selected by the user, the processor 13 a sets a level of a particular enemy character of the game world so as to be lower than in the “normal mode” so that the particular enemy character is easier to defeat. Further, for example, when the “B town” is selected by the user, the processor 13 a changes the town located at the predetermined position in the game world from the “A town” to the “B town.” That is, the processor 13 a changes the town data in the game data D2 which is used during the game process from the town data of the “A town” to the town data of the “B town.”

In step S18, the processor 13 a determines whether a key transmission/reception instruction has been issued by the user. Then, when the key transmission/reception instruction has been issued, the processor 13 a proceeds the processing to step S19. Otherwise, the processor 13 a proceeds the processing to S22.

In step S19, the processor 13 a transmits a key whose possession flag is set to “1” in the possessed key information D3 to the other hand-held game apparatus 10 b via the infrared communication device 16.

In step S20, the processor 13 a receives a key possessed by the other hand-held game apparatus 10 b via the infrared communication device 16.

In step S21, the processor 13 a updates the selectable option information D4 based on the received key. Specifically, the processor 13 a changes a selectable/unselectable flag of an option corresponding to the received key to “1” in the selectable option information D4. For example, when the “difficult mode key” is received from the other hand-held game apparatus 10 b, the processor 13 a changes the selectable/unselectable flag of the “difficult mode” to “1.”

In step S22, the processor 13 a determines whether or not to end the game. Then, when the processor 13 a determines to end the game, the processor 13 a saves save data (data for later resuming the game from where the game was suspended) in an internal storage unit 14 a, the external storage unit 17 a, or the like, as appropriate, and ends the execution of the game program D1. The save data includes the possessed key information D3 and the selectable option information D4. When the processor 13 a determines not to end the game, the processor 13 a returns the processing to step S11.

FIG. 10 to FIG. 13 show the program, the information, the flow chart related to the game of the version A. It should be noted that a program, information, and a flow chart related to the game of the version B are basically the same as those related to the game of the version A. However, those related to the game of the version B are different from those related to the game of the version A at least in the following points.

That the selectable/unselectable flag of the “A town” is set to “0” and the selectable/unselectable flag of the “B town” is set to “1” in step S10. That it is determined whether the condition B1 or the condition B2 is satisfied in step S12.

As described above, according to the exemplary embodiment, a setting item which cannot be selected by simply playing one of the game of the version A and the game of the version B can become selectable by receiving a key which is obtained by playing the game of the other version. Accordingly, transmission/reception of keys between users who own games of different versions is promoted and thereby communication between the users can be activated.

Further, according to the exemplary embodiment, in the initial state, the “A town” is located at a particular position in the game world in the game of the version A. Meanwhile, in the game of the version B, the “B town” is located instead of the “A town” at the particular position in the game world which is basically the same as the game world of the version A. However, according to the exemplary embodiment, for example, by receiving the “B town key,” the “B town” can be caused to appear also in the game world of the game of the version A. Similarly, by receiving the “A town key,” the “A town” can be caused to appear also in the game world of the game of the version B. Accordingly, for example, a user who owns the game program of the version A can receive the “B town key” from another user who owns the game program of the version B, and thereby use the “B town” in the game of the version A without purchasing the game program of the version B. Further, as for a user who owns both of the game program of the version A and the game program of the version B, when the user desires to use the “B town” in the middle of playing the game of the version A, the user can call up the screen for changing the settings and cause the “B town” to appear in the game world easily. Thus, there is no need for the user to switch between the external storage units 17 a, 17 b which store the game programs of the respective versions and to start up the game program of the other version, which is convenient for the user.

Further, according to the exemplary embodiment, the “difficult mode” cannot be selected by normal game play in the game of the version A while the “easy mode” cannot be selected by normal game play in the game of the version B. However, according to the exemplary embodiment, for example, the “difficult mode” can be selected also in the game of the version A by receiving the “difficult mode key.” Similarly, the “easy mode” can be selected also in the game of the version B by receiving the “easy mode key.” Accordingly, for example, even after the user who owns the game program of the version A has cleared the game of the version A, the user can receive the difficult mode key” from another user who owns the game program of the version B, and thereby try the “difficult mode” in the game of the version A. Further, even when the user who owns the game program of the version B finds the “normal mode” of the game of the version B too difficult and cannot advance the game, the user can receive the “easy mode key” from another user (a friend who is a good game player, a family member, and the like) who owns the game program of the version A, and thereby change the game of the version B to the “easy mode” and advance the game.

It is noted that the above exemplary embodiment is only for illustrative purposes and numerous other modifications can be devised.

For example, in the above exemplary embodiment, the hand-held game apparatus 10 is used. However, the present technology is not limited thereto, and any information processor (e.g., a stationary game apparatus, a mobile phone, a smartphone, a desk top computer, a notebook computer, and the like) may be used.

Further, in the exemplary embodiment, key transmission/reception is performed via infrared communication. However, the exemplary embodiment is not limited thereto, and the key transmission/reception may be performed via wireless communication based on any method, may be performed via a communication cable, or may be performed via a server apparatus on a network. Further, instead of transmitting/receiving a key, a password or save data may be used. For example, a character string (password) corresponding to a key possessed by the hand-held game apparatus 10 b may be displayed on a display device 12 b of the hand-held game apparatus 10 b, and the displayed character string may be inputted to the hand-held game apparatus 10 a via an input device 11 a of the hand-held game apparatus 10 a. Further, for example, the possessed key information D3 included in the save data saved in the hand-held game apparatus 10 b may be read out by the processor 13 a of the hand-held game apparatus 10 a.

Further, in the exemplary embodiment, the two hand-held game apparatuses 10 a, 10 b are used. However, the exemplary embodiment is not limited thereto, and only the single hand-held game apparatus 10 a may be used and the game of the version A and the game of the version B may be alternately played by switching between the two external storage units 17 a, 17 b.

Further, in the exemplary embodiment, keys are transmitted/received between the games (game programs) of the different versions of the same title. However, the exemplary embodiment is not limited thereto, and keys may be transmitted/received between games (game programs) of different titles.

Further, in the exemplary embodiment, with respect to unselectable options, the marks (23 a to 23 c) indicating that the options are unselectable are displayed, respectively in the screen for changing the settings (FIG. 5, FIG. 6). However, the exemplary embodiment is not limited thereto, and the user may be informed of an unselectable option by any other method. For example, an unselectable item may be grayed out or hidden.

Further, in the exemplary embodiment, an example in which the degree of difficulty of the game and the towns are changed has been described. However, the exemplary embodiment is not limited thereto. For example, not only the towns but also any faculty or area located in the game world may be changed.

Further, in the above exemplary embodiment, the plurality of processes shown in FIG. 13 are executed by a single computer (the processor 13 a). However, in another embodiment, the plurality of processes may be shared and executed by a plurality of computers. Further, in another embodiment, a part of or all of the plurality of processes may be realized by a dedicated circuit.

Further, in the above exemplary embodiment, the plurality of processes shown in FIG. 13 are executed in a single information processor (the hand-held game apparatus 10 a). However, in another embodiment, the plurality of processes may be shared and executed by a plurality of information processors (e.g., the hand-held game apparatus 10 a and a server apparatus).

Further, in the exemplary embodiment, the game program D1 is loaded into the main memory 15 a from the external storage unit 17 a. In another exemplary embodiment, the game program D1 may be loaded into the main memory 15 a from the internal storage unit 14 a. Still, in another exemplary embodiment, the game program D1 may be received from the hand-held game apparatus 10 b or the server apparatus and loaded into the main memory 15 a. 

What is claimed is:
 1. A game system including a single or a plurality of game apparatuses, the game system comprising: at least one input unit; a first game execution unit which executes a first game in accordance with an instruction of a player inputted via the input unit; and a second game execution unit which executes a second game in accordance with an instruction of the player inputted via the input unit, wherein the second game execution unit includes a second setting unit which sets a new game mode of a first degree of difficulty so as to be accessible in the second game in response to an execution result of the first game having satisfied a predetermined condition.
 2. The game system according to claim 1, wherein the first game execution unit includes: a first determination unit which determines whether the execution result of the first game satisfies the predetermined condition; a first data output enabling unit which enables output of predetermined first data indicating that the execution result of the first game satisfies the predetermined condition in response to the execution result of the first game having satisfied the predetermined condition; and a first data output unit which outputs the first data, and the second game execution unit includes a first data input unit which receives the first data, and the second setting unit sets the game mode of the first degree of difficulty which is accessible in the first game so as to be inaccessible in the second game when the first data is yet to be received, and sets the game mode of the first degree of difficulty so as to be accessible in the second game in response to the first data having been received.
 3. The game system according to claim 2, wherein the first data output unit transmits a signal representing the first data via wireless communication, thereby outputting the first data, and the first data input unit receives the signal via wireless communication, thereby receiving the first data.
 4. The game system according to claim 1, wherein the game mode of the first degree of difficulty is a game mode of a lower degree of difficulty than a game mode which is accessible in the second game when the execution result of the first game does not satisfy the predetermined condition.
 5. The game system according to claim 1, wherein the game mode of the first degree of difficulty is a game mode of a higher degree of difficulty than a game mode which is accessible in the second game when the execution result of the first game does not satisfy the predetermined condition.
 6. The game system according to claim 1, wherein the predetermined condition is to clear the first game.
 7. The game system according to claim 1, wherein the first game execution unit includes a first display control unit which causes a display device to display a setting change screen for urging a user to select whether or not to use the game mode of the first degree of difficulty, and the first display control unit causes the display device to display the setting change screen in a different display mode in accordance with whether the game mode of the first degree of difficulty is set so as to be accessible by the second setting unit.
 8. The game system according to claim 1, wherein the first game execution unit further includes a first setting unit which sets a new game mode of a second degree of difficulty so as to be accessible in the first game in response to an execution result of the second game having satisfied a second predetermined condition.
 9. The game system according to claim 1, wherein the game system comprises: a first game apparatus which includes the input unit and the first game execution unit and; a second game apparatus which includes the input unit and the second game execution unit.
 10. The game system according to claim 1, comprising: a first storage medium having stored therein a first game program for causing the game apparatus to function as the first game execution unit; and a second storage medium having stored therein a second game program for causing the game apparatus to function as the second game execution unit, wherein the game apparatus can selectively access to one of the first storage medium and the second storage medium.
 11. The game system according to claim 1, wherein the first game and the second game are different versions of a same game title.
 12. A computer-readable non-transitory storage medium having stored therein a game program to be executed in a game system including a single or a plurality of game apparatuses and comprising at least one input unit, the game program causing a computer of the game apparatus to execute: a first game execution process of executing a first game in accordance with an instruction of a player inputted via the input unit; and a second game execution process of executing a second game in accordance with an instruction of the player inputted via the input unit, wherein the second game execution process includes a second setting process of setting a new game mode of a first degree of difficulty so as to be accessible in the second game in response to an execution result of the first game having satisfied a predetermined condition.
 13. A game processing method performed in a game system including a single or a plurality of game apparatuses and comprising at least one input unit, the game processing method comprising: executing a first game process in accordance with an instruction of a player inputted via the input unit; and executing a second game process in accordance with an instruction of the player inputted via the input unit, wherein the second game process includes a second setting process of setting a new game mode of a first degree of difficulty so as to be accessible in the second game process in response to an execution result of the first game having satisfied a predetermined condition.
 14. A game apparatus comprising: an input unit; a first game execution unit which executes a first game in accordance with an instruction of a player inputted via the input unit; and a second game execution unit which executes a second game in accordance with an instruction of the player inputted via the input unit, wherein the second game execution unit includes a second setting unit which sets a new game mode of a first degree of difficulty so as to be accessible in the second game in response to an execution result of the first game having satisfied a predetermined condition. 